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Fujifilm X-Pro2 Severe Image Quality Bug: Grid Artifacts Occur with 3 Different Lenses

Get Fujifilm X-Pro2 and Fujifilm XF lens at B&H Photo.

Two days ago, I reported on the severe damage to image quality seen with the Fujifilm X-Pro2 under certain high contrast lighting situations—a grid superimposed over a large area of the image.

It was plausible that the issue was some curious interaction specific to the Fujifilm XF 90mm f/2. But I have now reproduced the same issue with the XF 23mm f/1.4 and the XF 35mm f/2, adding examples with those lenses:

Fujifilm X-Pro2 Image Quality: Grid Artifacts

Images shown at sizes up to full 24MP resolution.

At least one reader made an invalid assumption: I reiterate that this issue occurs with in-camera JPEG from raw/RAF, not just raw files converted in ACR. So the problem is baked into the RAF file, and is thus irrevocable damage to the image.

I do not have any other Fujifilm X body to check whether the issue is unique to the X-Pro2, but my suspicion is that it occurs with other X camera bodies.

Will this issue be fixable with a firmware update? I deem it unlikely, because the behavior appears to be a lens-sensor reflection problem. I hope that I am mistaken.

Actual pixels, from in-camera JPEG
f5.6 @ 1/550 sec, ISO 200; 2016-03-21 18:37:03
X-Pro2 + XF90mmF2 R LM WR @ 137mm (90mm)

[low-res image for bot]
SSD upgrade that takes full advantage of APFS

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